A displacement driving mechanism of a ground-sky monorail stacker
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN RIDONG INTELLIGENT EQUIPMENT CO LTD
- Filing Date
- 2025-08-27
- Publication Date
- 2026-06-23
Smart Images
Figure CN224393616U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automated warehousing and logistics technology, and in particular to a displacement drive mechanism for a single-rail stacker crane. Background Technology
[0002] The displacement drive mechanism of the monorail stacker crane is the core device that enables the stacker crane to move precisely along the monorail. It consists of a drive motor, transmission components (gears / chains), a guide mechanism, and a braking system. It is responsible for driving the loading platform to complete horizontal / vertical displacement, ensuring efficient positioning and operation of warehousing operations.
[0003] In existing technologies, the displacement drive mechanism of the monorail stacker crane converts the power output of the drive motor into driving force through gear and chain transmission components, which drives the stacker crane to move along the monorail. The guide mechanism constrains the running trajectory to prevent deviation, and the braking system starts and stops as needed. Through motor speed regulation and sensor feedback, the precise horizontal / vertical displacement of the loading platform is achieved, supporting efficient storage and retrieval in warehousing.
[0004] However, in the existing technology, some stacker crane displacement drive mechanisms have uneven power distribution during transmission, which can easily lead to excessive force on a single gear. In terms of guidance, most of them adopt single track guidance. When the stacker crane is running at high speed, it is prone to deviation and swaying, resulting in poor stability. To solve the above problems, a single-track stacker crane displacement drive mechanism is proposed. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a displacement drive mechanism for a monorail stacker crane, which aims to improve the problem of poor stability and deviation that easily occurs during high-speed operation in some existing technologies.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a displacement drive mechanism for a single-rail stacker crane, comprising a lower crossbeam, a support plate fixedly connected to the outer left side of the lower crossbeam, a traveling motor fixedly connected to the top right side of the support plate, a drive column fixedly connected to the drive end of the traveling motor, a drive pinion fixedly connected to the left side of the drive column, three driven gears meshing with the outer side of the drive pinion, a gear ring fixedly connected to the top of the support plate, the gear ring meshing with the three driven gears, and two limiting posts a rotatably connected inside the support plate;
[0007] As a further description of the above technical solution: a transmission column is fixedly connected to the left side of each of the three driven gears, a three-leaf plate is fixedly connected to the outside of the three transmission columns, and a worm gear is fixedly connected to the left side of the outside of the three-leaf plate.
[0008] As a further description of the above technical solution: a turbine is fixedly connected to the outside of each of the two limiting posts a, the two turbines mesh with the worm gear, and a lateral guide gear a is fixedly connected to the bottom of each of the two limiting posts a;
[0009] As a further description of the above technical solution: the bottom of the lower crossbeam is slidably connected to a lower rail, the bottom of the support plate is slidably connected to the top of the lower rail, and multiple teeth a are fixedly connected to the front and rear sides of the lower rail, and the multiple teeth a mesh with the two lateral guide gears a.
[0010] As a further description of the above technical solution: Limiting blocks are fixedly connected to both the left and right ends of the lower track; push rods are fixedly connected to the adjacent sides of the two limiting blocks; sliding perforated plates are fixedly connected to the adjacent sides of the two push rods; hydraulic cylinders are slidably connected to the outside of the sliding perforated plates; buffer plates are fixedly connected to the adjacent sides of the two hydraulic cylinders; buffer springs are provided on the outside of the buffer plates; and the other end of the buffer springs is located outside the limiting blocks.
[0011] As a further description of the above technical solution: the right side of the lower crossbeam is rotatably connected to two limiting posts b via a connecting plate, and the bottom of each of the two limiting posts b is fixedly connected to a lateral guide gear b, and the two lateral guide gears b mesh with the multiple teeth a.
[0012] As a further description of the above technical solution: both ends of the lower crossbeam are fixedly connected to columns, the tops of the two columns are fixedly connected to an upper crossbeam, the upper crossbeam is fixedly connected to multiple lateral guide wheels via a rotating shaft, and the outer sides of the multiple lateral guide wheels are slidably connected to an upper rail.
[0013] This utility model has the following beneficial effects:
[0014] 1. In this utility model, the traveling motor drives the drive pinion to rotate, which in turn drives the three driven gears to rotate around the drive pinion while rotating on their own axis. The power is then transmitted to the worm gear through components such as the transmission column and the three-leaf plate, ultimately realizing the rotation of the lateral guide gear to drive the overall displacement of the mechanism, thereby improving the transmission efficiency and service life of the mechanism, and effectively preventing the stacker crane from deviating and shaking during operation.
[0015] 2. In this utility model, when the mechanism runs to both ends of the track, the buffer plate contacts the mechanism first, and the buffer spring performs initial buffering. If the impact force is large, the hydraulic cylinder further plays a buffering role, thereby avoiding damage to the equipment caused by rigid collision and improving the safety and service life of the mechanism. Attached Figure Description
[0016] Figure 1 This is a three-dimensional schematic diagram of a displacement drive mechanism for a monorail stacker proposed in this utility model.
[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle;
[0018] Figure 3 for Figure 2 Enlarged view of point B in the middle;
[0019] Figure 4 for Figure 1 Enlarged view of point C in the middle;
[0020] Figure 5 This is a schematic diagram of the buffer disc of a displacement drive mechanism for a monorail stacker proposed in this utility model.
[0021] Legend:
[0022] 1. Lower crossbeam; 2. Support plate; 3. Traveling motor; 4. Drive column; 5. Drive pinion; 6. Driven gear; 7. Gear ring; 8. Transmission column; 9. Three-leaf plate; 10. Worm gear; 11. Limiting post a; 12. Turbine; 13. Lateral guide gear a; 14. Lower rail; 15. Tooth a; 16. Limiting post b; 17. Lateral guide gear b; 18. Limiting block; 19. Push rod; 20. Sliding perforated plate; 21. Hydraulic cylinder; 22. Buffer plate; 23. Buffer spring; 24. Column; 25. Upper crossbeam; 26. Lateral guide wheel; 27. Upper rail. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Reference Figure 1 , Figure 2 , Figure 3This utility model provides an embodiment of a displacement drive mechanism for a single-rail stacker crane, comprising a lower crossbeam 1, which serves as the bottom bearing foundation of the entire drive mechanism, used to connect and support various functional components. A support plate 2 is fixedly connected to the outer left side of the lower crossbeam 1. The support plate 2 is a horizontally arranged metal plate structure used to install a traveling motor 3 and related transmission components and provide stable support. The traveling motor 3 is fixedly connected to the top right side of the support plate 2. The traveling motor 3 is a servo motor, which can provide stable and precisely controllable driving force and is the power source of the entire mechanism. A drive column 4 is fixedly connected to the drive end of the traveling motor 3. The drive column 4 is a cylindrical metal component used to transmit the rotational power of the traveling motor 3 to the drive pinion 5. The drive pinion 5 is fixedly connected to the left side of the drive column 4. The drive pinion 5 drives the driven gear 6 to rotate through tooth meshing. Three driven gears 6 are meshed externally to the drive pinion 5. The three driven gears 6 are distributed in an equilateral triangle and mesh with the drive pinion 5 and the gear ring 7 to form a planetary gear transmission structure. The structure amplifies the driving torque. A toothed ring 7 is fixedly connected to the top of the support plate 2. The toothed ring 7 is an internal toothed ring structure, fixed to the support plate 2 and does not rotate. It provides meshing support for the driven gear 6 and restricts its movement trajectory. The toothed ring 7 meshes with the three driven gears 6, and the power transmission and motion conversion are realized through the cooperation between the teeth. There are two limiting posts a11 inside the support plate 2. The limiting posts a11 are vertically set cylindrical components that can rotate around their own axis and are used to install the turbine 12 and the lateral guide gear a13. It transmits torque. The left side of each of the three driven gears 6 is fixedly connected to a transmission column 8. The transmission column 8 is coaxially arranged with the driven gear 6 and is used to transmit the rotational motion of the driven gear 6 to the three-lobe plate 9. The three-lobe plate 9 is fixedly connected to the outside of the three transmission columns 8. The three-lobe plate 9 has a three-blade structure and can synchronously drive the three transmission columns 8 to maintain a consistent rotational state. The left side of the outside of the three-lobe plate 9 is fixedly connected to a worm gear 10. The worm gear 10 rotates coaxially with the three-lobe plate 9 and achieves vertical conversion of motion direction through the meshing of the helical tooth structure with the turbine 12.
[0025] Both limiting posts a11 are fixedly connected to turbines 12. The turbines 12 match the helical teeth of the worm gear 10, converting the horizontal rotational motion of the worm gear 10 into its own vertical rotational motion. The two turbines 12 mesh with the worm gear 10, and the power transmission and reversal are achieved through the helical engagement of the teeth. The bottom of both limiting posts a11 is fixedly connected to lateral guide gears a13. The lateral guide gears a13 mesh with the teeth a15 on the lower rail 14, converting the rotational motion of the limiting posts a11 into linear displacement of the entire mechanism along the rail. The bottom of the lower crossbeam 1 is slidably connected to the lower rail 14. The track 14 is a long, strip-shaped steel structure track that provides the bottom running path and support for the entire mechanism. The bottom of the support plate 2 is slidably connected to the top of the lower track 14, enabling the support plate 2 to drive the relevant components to move smoothly along the lower track 14. Multiple teeth a15 are fixedly connected to the front and rear sides of the lower track 14. The multiple teeth a15 are evenly distributed and mesh with the lateral guide gears a13 and b17, providing a meshing basis for gear transmission. The multiple teeth a15 mesh with the two lateral guide gears a13, and precise transmission and guidance are achieved through the meshing of the gears and teeth a15.
[0026] Reference Figure 1 , Figure 4 , Figure 5 Limit blocks 18 are fixedly connected to both the left and right ends of the lower track 14. The limit blocks 18 are block-shaped structures used to limit the displacement limit position of the mechanism and prevent the mechanism from leaving the track. Push rods 19 are fixedly connected to the outer sides of the two limit blocks 18. Push rods 19 are rod-shaped components that transmit the impact force to the sliding perforated plate 20 when the mechanism contacts the limit blocks 18. Sliding perforated plates 20 are fixedly connected to the outer sides of the two push rods 19. The sliding perforated plates 20 can slide inside the hydraulic cylinder 21 and generate damping force by squeezing the hydraulic oil. The outer sides of the sliding perforated plates 20 are slidably connected to... There is a hydraulic cylinder 21, which is filled with hydraulic oil. It absorbs impact energy by using the principle of hydraulic damping. A buffer plate 22 is fixedly connected to the outer side of the two hydraulic cylinders 21. The buffer plate 22 is a disc-shaped structure used to connect the buffer spring 23 and transmit the spring force. The buffer spring 23 is set on the outside of the buffer plate 22. The buffer spring 23 is a high-strength spring that absorbs part of the impact energy through its own deformation. The other end of the buffer spring 23 is set on the outside of the limiting block 18, so that the buffer spring 23 is between the limiting block 18 and the buffer plate 22, forming an elastic buffer structure.
[0027] Reference Figure 1 , Figure 2 , Figure 4Two limiting posts b16 are rotatably connected to the right side of the lower crossbeam 1 via a connecting plate. The limiting posts b16 have the same structure as the limiting posts a11 and are symmetrically distributed. They are used to install lateral guide gears b17 and assist in power transmission. Lateral guide gears b17 are fixedly connected to the bottom of each of the two limiting posts b16. The lateral guide gears b17 and a13 are symmetrically arranged and mesh with teeth a15, improving the smoothness and guiding accuracy of the mechanism's operation. The two lateral guide gears b17 mesh with multiple teeth a15, balancing the force on the mechanism through a symmetrical gear transmission structure to ensure stable displacement. The top ends of the lower crossbeam 1 are fixedly connected to... There are columns 24, which are vertical columnar structures used to connect the lower crossbeam 1 and the upper crossbeam 25 to form a frame structure. The top of the two columns 24 is fixedly connected to the upper crossbeam 25, which is parallel to the lower crossbeam 1 and is used to install lateral guide wheels 26 and cooperate with the upper rail 27. Multiple lateral guide wheels 26 are fixedly connected to the upper crossbeam 25 through a rotating shaft. The lateral guide wheels 26 can rotate around the rotating shaft to reduce friction with the upper rail 27. The upper rail 27 is slidably connected to the outside of the multiple lateral guide wheels 26. The upper rail 27 is parallel to the lower rail 14 and together they form a double-track structure to improve the overall stability of the mechanism.
[0028] Working principle: When the mechanism is working, the traveling motor 3 starts and drives the drive column 4 to rotate, which in turn drives the drive pinion 5 to rotate synchronously. Since the drive pinion 5 meshes with the three driven gears 6, and the three driven gears 6 simultaneously mesh with the gear ring 7 fixed on the top of the support plate 2, the rotation of the drive pinion 5 will drive the three driven gears 6 to roll along the gear ring 7. When the three driven gears 6 rotate, they will drive the transmission column 8 to rotate, which in turn drives the tri-lobe 9 to rotate. The tri-lobe 9 will then drive the worm gear 10 to rotate synchronously. The rotation of the worm gear 10 will drive the turbine 12 to rotate, thereby limiting the rotation of the drive pinion 5. The positioning post a11 rotates accordingly, and the lateral guide gear a13 rotates along with the positioning post a11. Since the lateral guide gear a13 meshes with the multiple teeth a15 on the front and rear sides of the lower track 14, the rotation of the lateral guide gear a13 will drive the support plate 2 and the lower crossbeam 1 to move along the lower track 14. At the same time, the two positioning posts b16 on the right side of the lower crossbeam 1, which are rotatably connected by the connecting plate, will move together with the lower crossbeam 1. The lateral guide gear b17 meshes with the multiple teeth a15 and plays an auxiliary guiding role during the movement to ensure the stability of the movement of the lower crossbeam 1.
[0029] When the lower crossbeam 1 moves, the column 24 will drive the upper crossbeam 25 at the top to move synchronously. The upper crossbeam 25 will slide along the upper track 27 through multiple lateral guide wheels 26 fixedly connected by the rotating shaft, further enhancing the stability of the entire mechanism when it moves. When the mechanism moves to the left and right ends of the lower track 14, it will first contact the buffer plate 22. After the buffer plate 22 is squeezed, it will push the sliding perforated plate 20 in the hydraulic cylinder 21 to move. At the same time, the buffer spring 23 will be compressed. The elastic force of the buffer spring 23 and the damping effect of the hydraulic cylinder 21 together form a buffer, avoiding the mechanism from directly colliding with the limit block 18, thus playing a protective role. Then the mechanism stops moving.
[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A displacement drive mechanism for a single-rail stacker crane, comprising a lower crossbeam (1), characterized in that: A support plate (2) is fixedly connected to the outer left side of the lower crossbeam (1). A traveling motor (3) is fixedly connected to the top right side of the support plate (2). A driving column (4) is fixedly connected to the driving end of the traveling motor (3). A driving pinion (5) is fixedly connected to the left side of the driving column (4). Three driven gears (6) are meshed with the outer side of the driving pinion (5). A gear ring (7) is fixedly connected to the top of the support plate (2). The gear ring (7) meshes with the three driven gears (6). Two limiting posts a (11) are rotatably connected inside the support plate (2).
2. The displacement drive mechanism for a monorail stacker crane according to claim 1, characterized in that: A transmission column (8) is fixedly connected to the left side of each of the three driven gears (6), and a three-leaf plate (9) is fixedly connected to the outside of the three transmission columns (8). A worm gear (10) is fixedly connected to the left side of the outside of the three-leaf plate (9).
3. The displacement drive mechanism for a monorail stacker crane according to claim 2, characterized in that: Both of the limiting posts a (11) are fixedly connected to the outside of a turbine (12), the two turbines (12) mesh with the worm (10), and the bottom of both limiting posts a (11) is fixedly connected to a lateral guide gear a (13).
4. The displacement drive mechanism for a monorail stacker crane according to claim 3, characterized in that: The bottom of the lower crossbeam (1) is slidably connected to the lower rail (14), and the bottom of the support plate (2) is slidably connected to the top of the lower rail (14). Multiple teeth a (15) are fixedly connected to the front and rear sides of the lower rail (14), and the multiple teeth a (15) mesh with the two lateral guide gears a (13).
5. The displacement drive mechanism for a monorail stacker crane according to claim 4, characterized in that: Limiting blocks (18) are fixedly connected to both the left and right ends of the lower track (14). Push rods (19) are fixedly connected to the adjacent sides of the two limiting blocks (18). Sliding perforated discs (20) are fixedly connected to the adjacent sides of the two push rods (19). Hydraulic cylinders (21) are slidably connected to the outside of the sliding perforated discs (20). Buffer discs (22) are fixedly connected to the adjacent sides of the two hydraulic cylinders (21). Buffer springs (23) are provided on the outside of the buffer discs (22). The other end of the buffer springs (23) is located outside the limiting blocks (18).
6. The displacement drive mechanism for a monorail stacker crane according to claim 4, characterized in that: The right side of the lower crossbeam (1) is rotatably connected to two limiting posts b (16) via a connecting plate. The bottom of each of the two limiting posts b (16) is fixedly connected to a lateral guide gear b (17), and the two lateral guide gears b (17) mesh with a plurality of teeth a (15).
7. The displacement drive mechanism for a monorail stacker crane according to claim 1, characterized in that: The lower crossbeam (1) is fixedly connected to two columns (24) at both ends. The top of the two columns (24) is fixedly connected to an upper crossbeam (25). The upper crossbeam (25) is fixedly connected to multiple lateral guide wheels (26) via a rotating shaft. The external side guide wheels (26) are slidably connected to an upper rail (27).